Query or add Trigger to Local Runtime .geodatabase used by Collector app

[DavinShokes1]

I have what appears to be a simple requirement for my Collector for ArcGIS users. Simply put, I need field1 to be calculated as field2 X field3 upon feature insert or update. Is this possible to do outside of Collector for ArcGIS?

Scenario:

1. User submits new point and fills in field2 and field3
2. User views feature popup and sees field1 has been populated

Thank you.